package thread;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;

//实现一个固定线程个数的线程池

class MyThreadPool {

    private BlockingQueue<Runnable> queue = null;

    public MyThreadPool(int n) {
        queue = new ArrayBlockingQueue<>(1000);

        for (int i = 0; i < n; i++) {
            Thread t = new Thread(() -> {
               while (true) {
                   try {
                       Runnable task = queue.take();
                       task.run();
                   } catch (InterruptedException e) {
                       throw new RuntimeException(e);
                   }
               }
            });
            t.start();
        }
    }

    public void submit(Runnable task) throws InterruptedException {
        queue.put(task);
    }
}

public class Demo35 {
    public static void main(String[] args) throws InterruptedException {
        MyThreadPool pool = new MyThreadPool(10);

        for (int i = 0; i < 100; i++) {
            int id = i;
            pool.submit(()->{
                System.out.println(Thread.currentThread().getName() + " id = " + id);
            });

        }
    }
}
